kbuild: deb-pkg: Add libdw-dev:native to Build-Depends-Arch

The dwarf.h header, which is included by
scripts/gendwarfksyms/gendwarfksyms.h, resides within the libdw-dev
package.

This portion of the code is compiled under the condition that
CONFIG_GENDWARFKSYMS is enabled.

Consequently, add libdw-dev to Build-Depends-Arch to prevent
unforeseen compilation failures.

Fix follow possible error:
  In file included from scripts/gendwarfksyms/symbols.c:6:
  scripts/gendwarfksyms/gendwarfksyms.h:6:10: fatal error: 'dwarf.h' file not found
      6 | #include <dwarf.h>
        |          ^~~~~~~~~

Fixes: f2856884 ("tools: Add gendwarfksyms")
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Tested-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>